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Activity of earthworms and small organisms mainly increases which process?

Answer and explanation

Correct answer: Soil mixing

Earthworms and other small organisms burrow through soil and move mineral particles and organic matter between layers. This increases soil mixing and aeration; the biological mixing is called bioturbation. Chemical weathering involves chemical alteration of minerals, so it is not the main process caused by earthworm activity. Exam tip: Link the turning and mixing of soil by organisms with bioturbation.

Related tags

Soil FormationBioturbationEarthwormsSoil MixingGeomorphic ProcessesSoil Formation ProcessesGeographyClass 11 Mcq

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